These transfer cases are pretty solid for a daily driver. You had a bearing seize up and that big ass chain ripped the housing in two. Doo not drive around in 2wd mode as you will suffer a worse fate when the rest of that case fails and destroys the back half of your trans. A new transfer case is 1k or way cheaper at a bone yard. That's a rough way to come into this forum. They are easy to rebuild if you find a cheap one that needs freshened up, only need a couple tools to tear them completely down.